Open Access

ARTICLE

Enhanced Heat Transfer by Unipolar Injection of Electric Charges in Differentially Heated Dielectric Liquid Layer

by Walid Hassen¹, Mohamed Naceur Borjini², Habib Ben Aissia¹

1 Ecole Nationale d’Ingénieurs, 5012 Monastir, Tunisia
2 Corresponding author. Naceur.borjini@fsm.rnu.tn, Gsm 21698830979. Institut Supérieur des Sci-ences Appliquées et de Technologique, 4000 Sousse, Tunisia

Fluid Dynamics & Materials Processing 2012, 8(4), 381-396. https://doi.org/10.3970/fdmp.2012.008.381

Abstract

In this work we consider the problem related to the electro-thermo-convection of a dielectric fluid in a rectangular enclosure placed between two electrodes. This layer is subjected simultaneously to the injection of electric charges and to a thermal gradient. The influence of the electric Rayleigh number (200 - 1000) on the structure of the flow, the density of electric charge and heat transfer is investigated. An oscillatory flow is observed and discussed in detail.

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Keywords

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